Abdominal exercise machine



FIG. 1 is a front, side perspective view of an abdominal exercise machine of a fitness equipment unit;

FIG. 2 is a front view of the abdominal exercise machine of FIG. 1;

FIG. 3 is a rear view of the abdominal exercise machine of FIG. 1;

FIG. 4 is a first side view of the abdominal exercise machine of FIG. 1;

FIG. 5 a second side view of the abdominal exercise machine of FIG. 1;

FIG. 6 is a top view of the abdominal exercise machine of FIG. 1; and,

FIG. 7 is a bottom view of the abdominal exercise machine of FIG. 1.

The broken lines and the dot dash lines shown throughout the figure views form no part of the claimed design. 

CLAIM We claim the ornamental design for an abdominal exercise machine, as shown and described. 